Part one of term paper
The hobby of fish keeping is much more difficult than it seems. It is also directly dependant on science. The bacterial cycle is one aspect related to science. As is how different filters work. Water conditions such as temperature, ph, and salinity play a big role in successful fish keeping as well. Science and Fish keeping go hand in hand ...

Part two of term paper
... of bacteria converts nitrites to nitrates which are not harmful to fish but build up to toxic amounts generally within a few months. That is why 20% water changes every two weeks is essential to healthy fish keeping. It generally takes a tank 21 days to cycle. During those 21 days there are 3 days where the ammonia spikes to a large amount and 2 days later on when nitrites spike generally. There are 2 types of filtration for fish tanks biological and mechanical. Biological is what I spoke abou ...